Sentinel V SC and RT Operation Manual
September
2017
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Page 81
Using the AC Power Adapter
The AC Adapter runs on any standard AC power and su18 VDC, 24 watts to the ADCP. The Senti-
nel V batteries can be connected or disconnected. If the adapter’s input voltage is greater than the battery
voltage, then the ADCP will draw all power from the AC adapter even if the battery is installed and con-
nected. Use the AC Adapter when testing the ADCP to conserve the battery power.
Figure 31.
Using the Real-Time Serial Output and AC Power Adapter
Data common and power ground should not be shared in order to avoid creating a ground
loop in water that can cause corrosion.
The voltage specification of the Sentinel V battery pack is 18V; however, most new batteries
provide a slightly higher voltage. The AC power adapter used for powering the Sentinel V
operates at 18V and therefore if a system is connected to the AC power adapter and
simultaneously the batteries are connected, the batteries will be depleted until they reach
the same voltage as the AC power adapter. While this does not affect the operation of the
system, you should be aware of the loss of power that can occur. Once the batteries are
discharged to the supplied voltage of the AC power adapter supply, the batteries will no
longer be depleted.
If the batteries are above 18V and you wish to preserve the battery charge your options
would be:
•
Disconnect the battery pack when using the AC power adapter.
•
Use the banana plug cable 73D-6021-00 to power the unit with a different power
supply (voltage not to exceed 20V). Note: You will also need cable (73D-3112-XXX;
where XXX denotes the cable length in meters). Both cables indicate a max voltage
of 18V. In this case you can use the cables at 20V.
